EP1235297A3 - Combline filter - Google Patents

Combline filter Download PDF

Info

Publication number
EP1235297A3
EP1235297A3 EP02251225A EP02251225A EP1235297A3 EP 1235297 A3 EP1235297 A3 EP 1235297A3 EP 02251225 A EP02251225 A EP 02251225A EP 02251225 A EP02251225 A EP 02251225A EP 1235297 A3 EP1235297 A3 EP 1235297A3
Authority
EP
European Patent Office
Prior art keywords
notch
combline filter
filter
combline
rampt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02251225A
Other languages
German (de)
French (fr)
Other versions
EP1235297A2 (en
Inventor
Mi-Hyun Son
Seong-Soo Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1235297A2 publication Critical patent/EP1235297A2/en
Publication of EP1235297A3 publication Critical patent/EP1235297A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H01P1/20327—Electromagnetic interstage coupling
    • H01P1/20336—Comb or interdigital filters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Filters And Equalizers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

A combline bandpass filter (100) has a notch filter structure (108c, C3) at its output to introduce a notch into its passband. The notch structure is an inductive transmission line element (108c) in parallel with a capacitor (C3), preferably provided by a RAMPT device.
EP02251225A 2001-02-26 2002-02-22 Combline filter Withdrawn EP1235297A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2001009656 2001-02-26
KR10-2001-0009656A KR100392682B1 (en) 2001-02-26 2001-02-26 Radio filter of combline structure with frequency cut off circuit and method

Publications (2)

Publication Number Publication Date
EP1235297A2 EP1235297A2 (en) 2002-08-28
EP1235297A3 true EP1235297A3 (en) 2003-10-08

Family

ID=19706252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02251225A Withdrawn EP1235297A3 (en) 2001-02-26 2002-02-22 Combline filter

Country Status (4)

Country Link
US (1) US6614328B2 (en)
EP (1) EP1235297A3 (en)
JP (1) JP2002335102A (en)
KR (1) KR100392682B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008278360A (en) 2007-05-02 2008-11-13 Ngk Spark Plug Co Ltd Laminate type band pass filter and diplexer using the same
CN103474729A (en) * 2013-09-29 2013-12-25 四川九洲电器集团有限责任公司 Multi-frequency band elimination filter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60236501A (en) * 1984-05-10 1985-11-25 Yagi Antenna Co Ltd Band-pass type filter
EP0373028A1 (en) * 1988-11-30 1990-06-13 Thomson Hybrides Passive band-pass filter
JPH0878909A (en) * 1994-09-05 1996-03-22 Matsushita Electric Ind Co Ltd Laminated filter
JPH09153704A (en) * 1995-11-28 1997-06-10 Hitachi Metals Ltd Dielectric laminated filter
EP0793289A1 (en) * 1996-02-27 1997-09-03 Hitachi Metals, Ltd. Multilayered frequency separator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835480A1 (en) * 1988-10-18 1990-04-19 Fraunhofer Ges Forschung HIGH FREQUENCY BAND PASS FILTER
US4963843A (en) * 1988-10-31 1990-10-16 Motorola, Inc. Stripline filter with combline resonators
FI93504C (en) * 1993-03-03 1995-04-10 Lk Products Oy Transmission line filter with adjustable transmission zeros
US6323745B1 (en) * 1999-09-09 2001-11-27 Qualcomm Inc. Planar bandpass filter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60236501A (en) * 1984-05-10 1985-11-25 Yagi Antenna Co Ltd Band-pass type filter
EP0373028A1 (en) * 1988-11-30 1990-06-13 Thomson Hybrides Passive band-pass filter
JPH0878909A (en) * 1994-09-05 1996-03-22 Matsushita Electric Ind Co Ltd Laminated filter
JPH09153704A (en) * 1995-11-28 1997-06-10 Hitachi Metals Ltd Dielectric laminated filter
EP0793289A1 (en) * 1996-02-27 1997-09-03 Hitachi Metals, Ltd. Multilayered frequency separator

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 095 (E - 395) 12 April 1986 (1986-04-12) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31) *

Also Published As

Publication number Publication date
KR20020069405A (en) 2002-09-04
KR100392682B1 (en) 2003-07-28
EP1235297A2 (en) 2002-08-28
US6614328B2 (en) 2003-09-02
JP2002335102A (en) 2002-11-22
US20020171514A1 (en) 2002-11-21

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